diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bbc8badd3..0eed44b8e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,6 +8,10 @@ on:
 permissions:
   contents: read
 
+defaults:
+  run:
+    shell: bash
+
 jobs:
 
   unit-test: